L2 Sys Admin - STL

Apex Systems; Berkeley (MO); On-site; USD 37,000 - 41,000; Full time

Benefits offered by this job

Health

Dental

Vision

Life Insurance

Short Term Disability

Hospitalization Coverage

Direct Deposit

Weekly Pay Periods

Training and Development Programs

401k

Referral Program

Job summary

Apex Systems is seeking a Level 2 Systems Administrator for a 100% on-site role in St. Louis, MO. This is a W2 contract with long-term rolling duration, offering $27-30/hour depending on experience.

Candidates must be US citizens capable of obtaining an Interim Secret clearance or higher and hold the CompTIA Security+ CE certification, with a minimum of 3 years of systems administration experience.

Qualifications

• U.S. citizenship and ability to obtain/maintain Interim Secret Security Clearance.
• CompTIA Security+ CE certification required prior to starting.
• Minimum 3 years of relevant systems administration experience.

Responsibilities

• Provide day-to-day operational support for Windows and Linux desktop systems, Windows and Unix/Linux server environments, HPC systems.
• Development, production, and application servers.
• Install, configure, maintain, and patch Microsoft and Linux operating systems and peripherals.
• Perform software installations, system upgrades, and hardware replacements.
• Troubleshoot and resolve desktop, server, and peripheral issues; escalate complex issues as required.
• Support dedicated network infrastructure from an operational and maintenance perspective.
• Perform IMACD activities.
• Provide desktop and workstation support within controlled or closed areas.
• Track, follow up, and document problems, issues, and escalations.
• Utilize Microsoft Office and other enterprise tools for documentation and reporting.

Skills

Security clearance

Windows/Linux admin

Troubleshooting

Documentation

Education

CompTIA Security+ CE

Job description

Job#: 3044840

Job Description:

Level 2 Systems Administrator

Apex Systems is hiring for Level 2 Systems Adminisrators with a large government and aerospace supporting client in St. Louis, MO!

Position requires a currently active, DoD-issued Interim Secret Security Clearance or higher.

Location: 100% on-site in St. Louis, MO

Contract Type/Duration: W2 Contract; Long-term rolling

Pay Rate: $27-30/hour (depending upon experience)

Requirements

• Candidates must be US Citizens with the ability to obtain and/or maintain an active Interim Secret Security Clearance or higher level as a condition and continuation of employment
• CompTIA Security+ CE certfication required prior to starting
• Minimum 3 years of relevant systems administration experience

Position Overview

The Level 2 Systems Administrator provides hands‑on operational support for enterprise desktop, server, and network environments. This role focuses on installation, maintenance, troubleshooting, and escalation support while operating within established standards and procedures. The Level 2 Administrator serves as a key operational contributor ensuring system stability and timely issue resolution.

Key Responsibilities

• Provide day‑to‑day operational support for: Windows and Linux desktop systems, Windows and Unix/Linux server environments, High Performance Computing (HPC) systems
• Development, production, and application servers
• Install, configure, maintain, and patch Microsoft and Linux operating systems and associated peripherals
• Perform software installations, system upgrades, and hardware replacements
• Troubleshoot and resolve desktop, server, and peripheral issues; escalat complex issues as required
• Support dedicated network infrastructure from an operational and maintenance perspective
• Perform IMACD activities (Install, Move, Add, Change, Dispose)
• Provide desktop and workstation support within controlled or closed areas
• Track, follow up, and document problems, issues, and escalations
• Utilize Microsoft Office and other enterprise tools for documentation and reporting

Working knowledge of:

• Microsoft Windows workstation and server operating systems
• Unix/Linux environments
• Server‑based technologies and application hosting
• Basic network concepts and topology
• Experience installing and maintaining operating systems and enterprise software
• Strong troubleshooting and problem‑resolution skills
• Ability to work effectively in a structured, process‑driven environment

Preferred Skills

• Experience supporting HPC or specialized computing environments
• Familiarity with enterprise change and incident management processes
• Experience supporting users in classified or restricted environments

#clearance

Please note that as a contract employee of Apex Systems, benefits include the below with employee contribution*

• Health
• Dental
• Vision
• Life Insurance; Short Term Disability
• Hospitalization Coverage
• Direct Deposit
• Weekly Pay Periods
• Training and Development Programs
• 401k
• Referral Program

EEO Employer

Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law. If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation in using our website for a search or application, please contact our Employee Services Department at [email protected] or 844-463-6178.